Hi M.A.

Your question is rather unclear,

=24.5-24.2 = 0.3 (yes that's right)

=20.4+0.1 = 20.5
=round(20.4+0.1,0) = 21

What are the fifths that you are talking about?

Regards
Martin


"M.A.Tyler" <Great Lakes State wrote in message
...
Is it possible to perform simple addition and subtraction in fifths?
something like 24.5 - 24.2=.3,
or
20.4 + 0.1=21

Thanks.

M.A.Tyler